Enhanced B7-H4 expression in gliomas with low PD-L1 expression identifies super-cold tumors - Yan Zhang; Di Chen; Qiqi Lu; Yu Yao; Gaopeng Li; Chunxia Ji; Ying Qi; Chao Tang; Ji Xiong; Jian Hu; Fatma Betul Aksoy Yasar; Dave S B Hoon; et al. (Journal for ImmunoTherapy of Cancer, 2020)